Classless IPv4 Addressing Quiz
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Questions and Answers

What is the main reason for classless addressing?

  • More classes than other types of addressing
  • More security by encrypting datagrams
  • More compatibility with upper layers protocols
  • Better usage of the available addressing space (correct)

    • Which of the following can be used as a block address for a 1024 host network?

  • TCP and UDP
  • Upper protocol and lower protocol
  • OUI and serial number
  • Network ID and host ID (correct)

    • What is the only one of the following IP addresses that can be assigned as a host address?

  • 100.10.50.192 /28
  • 100.256.70.10 /24
  • 200.60.6.7 /29 (correct)
  • 210.60.50.40 /25

    • How many hosts can be accommodated in the block 20.30.50.0 /22?

    <p>1048</p> Signup and view all the answers

    Which of the following is not a valid CIDR notation?

    <p>/256</p> Signup and view all the answers

    What is the block boundary address for subnet 192.168.1.0/26?

    <p>192.168.1.128</p> Signup and view all the answers

    What is the subnet mask for a CIDR notation of n=22?

    <p>255.255.252.0</p> Signup and view all the answers

    What is the suffix length for a CIDR notation of n=22?

    <p>10</p> Signup and view all the answers

    What is the actual number of addresses in a block with a CIDR notation of n=22?

    <p>$2^{10}$</p> Signup and view all the answers

    What is the first address in the block for a CIDR notation of n=22?

    <p>Any address in the block ANDed with the subnet mask</p> Signup and view all the answers

    What is the last address in the block for a CIDR notation of n=22?

    <p>The first address in the block plus the complement of the subnet mask</p> Signup and view all the answers

    What is the usable number of addresses in a block with a CIDR notation of n=22?

    <p>$2^{10}-2$</p> Signup and view all the answers

    What is the subnet mask for the CIDR notation 17.17.32.0/22?

    <p>255.255.252.0</p> Signup and view all the answers

    What is the suffix length for the CIDR notation 17.17.32.0/22?

    <p>12</p> Signup and view all the answers

    What is the first address in the block for the CIDR notation 17.17.32.0/22?

    <p>17.17.32.0</p> Signup and view all the answers

    What is the total number of addresses in the block for the CIDR notation 17.17.32.0/22?

    <p>1024</p> Signup and view all the answers

    Which statement about CIDR notation is correct?

    <p>The prefix length is the number of bits in the network portion of the IP address.</p> Signup and view all the answers

    What is the last address in the block for the CIDR notation 17.17.32.0/22?

    <p>17.17.35.255</p> Signup and view all the answers

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